. The biology of marine animals. Marine animals; Physiology, Comparative. COLOUR CHANGES 511 always more contracted than on the upper surface, and experimental analysis has revealed that this is a postural response involving tactile stimulation of the lower surface, and reflex action through the central nervous system. Sensory impulses from these peripheral fields impinge upon the brain where there is a hierarchy of three chromatic centres, inhibitory and general colour centres in the supra-oesophageal ganglia, and chromatophore motor centres in the suboesophageal ganglia. The supra-oesophagea
. The biology of marine animals. Marine animals; Physiology, Comparative. COLOUR CHANGES 511 always more contracted than on the upper surface, and experimental analysis has revealed that this is a postural response involving tactile stimulation of the lower surface, and reflex action through the central nervous system. Sensory impulses from these peripheral fields impinge upon the brain where there is a hierarchy of three chromatic centres, inhibitory and general colour centres in the supra-oesophageal ganglia, and chromatophore motor centres in the suboesophageal ganglia. The supra-oesophageal chromato- phore centres are symmetrically disposed, and each may act on either side of the body. These higher centres receive information from optic, tactile and static sense organs. The suboesophageal chromatophore centresââ located in four lobesâcontain the cell bodies of the chromatophore effer- ent nerves, which form the final common pathway to these structures. One. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Nicol, J. A. Colin (Joseph Arthur Colin), 1915-. New York, Interscience Publishers
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Keywords: ., bookcentury1900, booksubjectmarineanimals, booksubjectphysiology
